1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MatroZZZ [7]
2 years ago
9

How many moles of oxide are in 0.050 g of Iron(III) oxide?

Chemistry
1 answer:
makvit [3.9K]2 years ago
7 0

Answer:

0.00031311017345051

You might be interested in
PLEASE ANSWER ASAP:
sergij07 [2.7K]

Answer:

  • <u><em>True</em></u>

Explanation:

<em>Heat</em> is a kind of energy.

The <em>kinetic theory </em>relates the heat with the movement of the particles: the more the particles move, the larger the kinetic energy of the system. The kinetic theory states that heat is the kinetic energy of the particles, atoms or molecules, in a substance, that is transferred from a substance at higher temperature to other substance at lower temperature.

Based on that principle, the kinetic theory explains the changes of phases of the substances in terms of the motion of the particles: the hotter an object the faster the particles move, the more energetic the particles are, and they occupy more space. Thus, when a solid is heated, the particles move faster and it can pass to liquid or gaseous state.

7 0
3 years ago
The activation energy for a given reaction is 56 kj/mol. at what temperature would the rate constant be quadruple what is was at
Alex787 [66]

The rate equation is given as:

k = A e^(- Ea / RT)

 

Dividing state 1 and state 2:

k1/k2 = e^(- Ea / RT1) / e^(- Ea / RT2)

k1/k2 = e^[- Ea / RT1 - (- Ea / RT2)]

k1/k2 = e^[- Ea / RT1 + Ea / RT2)]

 

Taking the ln of both sides:

ln (k1/k2) = - Ea / RT1 + Ea / RT2

ln (k1/k2) = - Ea / R (1/T1 - 1/T2)

 

Since k2 = 4k1, therefore k1/k2 = ¼

 

ln (1/4) = [- (56,000 J/mol) / (8.314 J / mol K)] (1/273 K – 1/ T2)

2.058 x 10^-4 = 1/273 – 1/T2

T2 = 289.25 K

8 0
3 years ago
1. A gas has a volume of 45 L at a pressure of 140 kPa. What is the volume when
pishuonlain [190]

Answer:

The new volume of the gas is 21 L.

Explanation:

Volume of a gas is inversely proportional to its pressure at constant temperature such that,

V\propto \dfrac{1}{P}

or

P_1V_1=P_2V_2

We have,

V_1=45\ L\\\\P_1=140\ kPa \\\\P_2=300\ kPa

It is required to find V₂. Using above law or Boyle's law such that :

V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{140\times 45}{300}\\\\V_2=21\ L

So, the new volume of the gas is 21 L.

7 0
3 years ago
Which pair of elements would most likely bond to form a covalently bonded compound?
anastassius [24]

Answer:

two nonmetal elements join together to form covalent compounds

3 0
3 years ago
Why is it important to have long term measurements when studying ecosystems
Alex Ar [27]
Because ecosystems don't change over one day, they change over a long period of time. Plus, something that happens may be because of more than just one change.
5 0
3 years ago
Other questions:
  • A sample of ammonia has a mass of 82.9 g. how many molecules are in this sample?
    9·2 answers
  • How much does it cost to drive 75 minutes
    15·1 answer
  • What energy transformation occur when wood is burned
    10·1 answer
  • Draw the major organic product of the regioselective reaction of 2-methyl-2-pentene with H2O in presence of H2SO4. You do not ha
    8·1 answer
  • What 2 molecules make up sucrose?
    6·2 answers
  • Which of the changes are chemical changes?
    9·1 answer
  • which object would have more potential energy a bowling ball stored on a high shelf in a closet or a baseball on the same shelf?
    7·1 answer
  • Which of the following polyatomic ions has a 3- ionic charge?
    11·1 answer
  • How many grams of H2 are needed to react with 47 grams of N2 to produce 200 grams of NH3?
    9·1 answer
  • What is the total mass of products formed when 64.18 grams of CH4 is burned with excess oxygen?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!